some further purification of nodes.php

some further purification of nodes.php

code responsible for parsing of $_GET variables is almost completely rewritten
(comments about base36 facism were deleted, we do not want such concepts to pollute our minds)

syntax as follows
kyberiacz/id/NUMERIC_NODE_ID/TEMPLATE_Id
kyberiacz/k/BASE36_NODE_ID/TEMPLATE_Id
kyberiacz/name/NODE_NAME
(/name/ was added as an identifier because I wanted to create a
universal solution, independent from mod_rewrite rules in maximal possible extent)

THIS IS NOW THE ONLY MOD_REWRITE RULE present in my kyberia.conf file, all subsequent processin is in nodes.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*) /nodes.php/$1 [L]